Multidetector computed tomography evaluation of origin, V2 segment variations and morphology of vertebral artery

Tasdemir, Rabia; Cihan, Ömer Faruk

doi:10.5603/fm.a2022.0030

Cited by 8 publications

(10 citation statements)

References 30 publications

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“…In the course of reviewing papers, we found an interesting issue that there were some differences in the rate of variation of vertebral artery inlet in various reports. The variability of anomalous entry level we found was 8.30%, compared to 12.5% in Republika Srpska 5 , 15.7% in Germany 6 , 5.75% in Isreal 7 , 7.0% of LV and 6.2% of RV in Japan 8 , 8.7% in Taiwan, R.O.C 9 , 5.3% of LV and 0.8% of RV in Thailand 10 , 5.1% in Korea 11 , 8%of LV and 6.6% of RV in another study of Korea 12 , 7.5% of LV in Turkey 13 . This could be explained by sample sizes and structure differences.…”

Section: Discussionmentioning

confidence: 84%

Entrance and origin of the extracranial vertebral artery found on computed tomography angiography

Xie

Zhang

et al. 2022

Sci Rep

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To investigated morphological variability of vertebral artery (VA) origin and its entrance level into cervical transverse foramina by computed tomography angiography (CTA). To retrospectively investigated CTA of 223 subjects (446 VA courses). Investigated were origin of the VA and its level of entrance into vertebral transverse foramen with notification of the sex and side of variation. The VA entered the C6 transverse process in 91.70% of specimens (409 out of 446 VA courses). Abnormal entrance of VA was observed in 8.30% of specimens (37 VA courses), with the level of entrance into the C3, C4, C5, or C7 transverse foramen at 0.22%, 2.47%, 4.71% and 0.90% respectively. Comparably, the overall variability of abnormal origin of VA was 1.57% (7 out of 466 VA courses), in which the left vertebral arteries all arose from aortic arch. The variation rate of vertebral entrance rose up to 50% in abnormal origin subgroup. When comparing subgroups of subjects with normal and abnormal origin, there was significance difference in the frequency of entrance variation in the level of transverse foramen (p < 0.001). Abnormal entrance and origin of VA were observed in 8.30% and 1.57% of VA courses, which can be accurately appeared by CTA. Regarding to the subgroups of abnormal origin, the frequency of entrance variation was significantly increased in the level of transverse foramen compared to that of normal origin.

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Section: Discussionmentioning

confidence: 84%

Entrance and origin of the extracranial vertebral artery found on computed tomography angiography

Xie

Zhang

et al. 2022

Sci Rep

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“…The type 3b2 variation was reported in 1 of 4000 patients in the Indian population and 1.2% of the Jordanian population versus 0.1% in this study [ 1 , 14 ]. Origination of the vertebral artery directly from the aortic arch is important in endovascular interventions for the diagnosis and treatment of posterior cerebral events [ 16 , 27 ]. The type 3b7 variation was reported by Natsis et al in only one patient [ 13 ], and Mustafa et al found this aberrant configuration in two (0.4%) individuals [ 1 ].…”

Section: Discussionmentioning

confidence: 99%

Anatomical Variations in Aortic Arch Branching Pattern: A Computed Tomography Angiography Study

Tasdemir¹,

Cihan²,

Ince³

et al. 2023

Cureus

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Introduction: Variations in the branching pattern of the aortic arch (AA) are common. Modification of intravascular stents should be considered taking into account these AA branching variations. Identification of supra-aortic branching types and frequencies is important for specialists planning surgery in this region. In endovascular interventions to the AA, aortic stent grafts should be modified according to the variations of the branching patterns of the AA. In any surgical intervention to the region where the supraaortic branches are located, ignorance of the variations may cause unwanted injuries or complications.Methods: In this study, 699 computed tomography angiography (CTA) images were reviewed to investigate AA branching variations using the Horos software (an open-source image viewer). Four groups were constructed based on the number of branches emerging from the aortic arch, which were further divided into subtypes.Results: A total of 699 CTA images from 320 males and 379 females were included in this study. The usual AA branching pattern (type 3b1) was found in 68.5% of the patients. The combined prevalence of other eight branching patterns, designated as variations, was 31.5%. Variation types 1b1, 3b2, and 4b5 were identified in one patient each. Overall, types 2b1 and 2b2 had a prevalence of 28.3%. The type 2b3 variation was observed in 1.6% of the patients. The least common variations were type 4b1 (0.7%) and type 3b2 (0.1%). Conclusion:The identification of variations in AA branching patterns by CTA prior to surgical or endovascular interventions involving the aortic arch is important. Thus, specialists planning interventions in this region need to be aware and have knowledge of atypical aortic branching patterns. Higher prevalence rates of AA branching patterns compared to previous studies were identified in the Turkish population in this study and therefore, a comprehensive, multicenter study is needed to determine the cause of this differential finding.

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“…Anatomically, the human brain consists of two segments with separate arterial systems. The posterior part of the brain is nourished by the left vertebral artery and the right vertebral artery 1,2 . A portion of the cerebral blood flow is provided by the vertebral arteries (VAs) 3 .…”

Section: Introductionmentioning

confidence: 99%

“…A portion of the cerebral blood flow is provided by the vertebral arteries (VAs) 3 . The infratentorial structures of the brain (e.g., the cerebellum and the medulla) depend mainly on the VAs 3,1 . The VAs are originally divided from the first cervical part of the subclavian artery.…”

Section: Introductionmentioning

confidence: 99%

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The association between vertebral artery hypoplasia and fetal‐type variants of the posterior cerebral artery with imaging findings among patients with posterior circulation stroke: A single‐center cross‐sectional study

Layegh,

Jarahi,

Hassannejad

et al. 2024

Health Science Reports

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Background and AimThe present study investigated the correlation between vertebral artery hypoplasia and fetal‐type variations of posterior cerebral arteries with stroke patterns and imaging findings in individuals with posterior circulation ischemic stroke.MethodsIn this cross‐sectional study, patients with symptoms of acute ischemic stroke in the posterior circulation system referred to Ghaem Hospital in Mashhad between 2016 and 2022 were investigated. Demographic data, including age, gender, systemic diseases, history of previous stroke or transient ischemic attacks, and clinical manifestations of patients, were recorded using questionnaires and checklists from patient files. The results of imaging studies, including magnetic resonance imaging and computed tomography angiography, were also recorded. The obtained data were analyzed by SPSS statistical software.ResultsAmong 974 patients suffering from posterior circulation ischemic stroke, 155 patients with an average age of 60.44 ± 13.95 years were included in the study, out of which 97 patients (62.6%) were male. Unilateral vertebral artery hypoplasia on the right, left, and bilateral hypoplasia was present in 67 (43.2%), 35 (22.6%), and 5 (3.2%) patients, respectively. There were complete unilateral fetal origin on the right in 38 (24.5%), complete unilateral on the left in 12 (7.7%), partial unilateral on the right in 12 (7.7%), partial unilateral on the left in 6 (3.9%), complete bilateral in 14 (9%), and partial bilateral in 8 (5.2%) patients. There was no significant relationship between vertebral artery hypoplasia and PCA fetal‐type variants with different ischemia locations and infarct patterns (p > 0.05). Also, there was no significant relationship between the age and gender of patients with ischemia location and infarct pattern (p > 0.05).ConclusionDespite previous evidence showing a relation between vertebral artery hypoplasia and PCA fetal‐type variants as risk factors for PC stroke, the present study did not establish a significant correlation between these factors and the location of ischemia and infarct patterns.

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Multidetector computed tomography evaluation of origin, V2 segment variations and morphology of vertebral artery

Cited by 8 publications

References 30 publications

Entrance and origin of the extracranial vertebral artery found on computed tomography angiography

Entrance and origin of the extracranial vertebral artery found on computed tomography angiography

Anatomical Variations in Aortic Arch Branching Pattern: A Computed Tomography Angiography Study

The association between vertebral artery hypoplasia and fetal‐type variants of the posterior cerebral artery with imaging findings among patients with posterior circulation stroke: A single‐center cross‐sectional study

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